mybatis-plus无法扫描到mapper的解决方法，2步缺一不可

// 1. pom文件build中添加resources

            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>com/security/mapper/xml/*.xml</include>  // mapper全路径
                    </includes>
                </resource>
                <resource>
                    <directory>src/main/resources</directory>
                </resource>
            </resources>

// 2. xml文件添加mybatis-plus配置文件
mybatis-plus.mapper-locations=classpath:com/security/mapper/xml/*.xml    // mapper全路径